Paper-winding machine



0 United States Patent 1 3,539,125

[72] inventor Stig Sigvard Patriksson [56] References Cited Tilburgz, Netherlands UNITED STATES PATENTS $5 ii; 2,939,645 6/1960 Rowlands et ai 242/56 e 3,073,196 1/1963 Marcalus 242/56UX [45] Pmmed 3 323 739 6/19'67 Deming 242/56 [73] Assignee Edet International N. V.

Tilburg, Netherlands FOREIGN PATENTS a corporation of the Netherland 697,347 10/ 1 940 Germany 242/66 Primary ExaminerGeorge F. Mautz AttorneyPrangley, Clayton, Mullin, Dithmar & Vogel [54] gg i g g fi ABSTRACT: A machine for winding a paper web on cores, 8 raw wherein the winding mechanism has three rolls operating in [52] US. Cl. 242/56, pairs and a chutelike hood mounting a knife having air passage 242/56 openings therein, the hood and knife being movable to sever [51] Int.-Cl B65h 19/26, the web being wound on a first core, and wound on the second B65h 19/28 core by the action of the air stream passing around the space [50] Field of Search 242/66, 56, between the hood and second core and through the air passage openings.

In!" u 3 Patented Nov. 10, 1970 3,539,125

INVENTOR STIG SIGVARD PATRIKSSON PAPER-WINDING MACHINE BACKGROUND OF THE INVENTION A paper-winding machines of this type was that each time after the paper web wound had reached the desired diameter in the second winding station and had. been severed by a knife cooperating with the roll, the winding of the leading end of the paper web rapidly and reliably on the core disposed in the first winding station was not readily accomplished.

It is an object of this invention to obviate this deficiency by means of an improved construction of a paper-winding machine of the subject type.

To this effect the paper-winding machine according to the invention has its knife mounted to a chutelike hood covering the nip between the feed roll and the center roll, which hood is movable up and down and provided with a series of air passage openings that are arranged parallel to the cutting edge of the knife.

ln illustration of this invention, one embodiment of the paper-winding machine will now he described, by way of example, with reference to the accompanying drawings.

FIG. 1 is a diagrammatic side elevation of the winding machine;

FIG. 2 is a front elevation of the vertically movable hood with the knife mounted thereto.

Referring to FIG. 1, the assembly 1 carries a plurality of rotatably mounted guide rollers 2 and three operated winding rolls 3, 4 and 5 for the paper web 7 which is fed from a supply roll 6 rotatably supported by the assembly 1.

The paper web 7 is first wound on a core 8 which has been put in the nip between the winding rolls 3 and 4. As soon as the paper coil driven by the peripheral surface of the winding rolls 3 and 4 has reached a predetermined diameter, the coil 9 is transferred by way of appropriate means (not shown) to the nip between the winding rolls 4 and 5 in order to be further wound in that location while being driven by the peripheral surface of said latter winding rolls. At the same time a next core 8 is put on the nip between the winding rolls 3 and 4, and the paper web 7 moving on said rolls.

Once the paper coil 9 positioned between the winding rolls 4 and 5 has reached the desired diameter, the outer surface of said coil 9 will contact a feeler 10. This feeler l0 actuates a mechanism (not shown) by which a knife 11 is lowered down on the winding roll 4 cut the paper web 7, and the made-tomeasure paper coil 9 is discharged.

In order to see to it in immediate succession thereto that the leading end of the continuously fed paper web 7 is reliably wound on the core 8 which has been disposed on the paper web and in the nip between the winding rolls 3 and 4 beforehand, the knife ll is mounted to the edge ofa chutelike hood 12 covering the nip between the rolls 3 and 4 and the core 8 disposed therein, which edge faces the discharge side of the winding machine, and which hood, according to the embodiment shown, can be swung up and down by means of arms 13. When the paper web 7 is severed by the knife 11 mounted to the hood 12, there is but a rather narrow slit which divides the inner wall of the hood 12 from the peripheral surface of the core 8.

Because of the knife 11 having a series of openings 14 parallel to the cutting-edge of the knife, a quantity of air will be drawn in the slit between the hood [2 and the core 8 by way of said openings 14, as a result of the first rotary motion of the core 8. As a result of the airstream thus generated under the hood 12, the leading end of the paper web 7, which has been deflected upwards, will be firmly pressed against the core 8 and immediately thereafter under the pressure of the core 8 and the action of the winding rolls 3 and 4, tightly wound on said core 8. After some time the growing paper coil will be transferred to the nip between the winding rolls 4 and 5 in order to be made to measure, whereafter the operations described hereinbefore are repeated.

Application of this invention allows a paper web having a feed rate of m./min. and a width of 2 m. to be wound very reliably to successive coils of the desired diameter. In the construction of the winding machine there is, naturally, every freedom of shape and place of the air passage openings 14.

It is believed that my invention, its mode of construction and assembly, and many of its advantages should be readily understood from the foregoing without further description, and it should also be manifest that while a preferred embodiment of the invention has been shown and described for illustrative purposes, the structural details are nevertheless capable of wide variation within the purview of my invention as defined in the appended claims.

lclaim:

1. In a paper-winding machine including a plurality of rolls disposed in parallel-spaced relationship for receiving thereagainst a continuous web of paper and a core positioned in the nip between two of the rolls, the combination comprising a knife having air passage openings therein and mounted for movement toward and away from the leading one of the two rolls, and a chutelike hood movable to an operative position encircling the core but spaced therefrom, movement of said knife toward said leading'roll severing the web, whereupon continued rotation of; the core draws air in a stream through said openings and through the space between the core and the hood to press the leading end of the web against the core.

2. The paper-winding machine of claim 1 in which said air passage openings comprise notches opening to the cutting edge of said knife.

3. The paper-winding machine of claim 1 in which said rolls are threein number and said core is positioned first in the nip between the leading and center rolls and then moved and replaced by a second core when the paper coiled on the first core has reached a predetermined diameter, said first core being transferred to the nip between the center and trailing rolls.

4. The paper-winding machine of claim 3 in which a feeler is positioned in spaced relationship with said first core so that when the paper on said core has reached the desired diameter the feeler is contacted to lower said knife against said center roll thereby severing the web thereon.

5. The paper-winding machine of claim I in which said hood is movable into close proximity to said core thereby defining a slitlike air passage therebetween, the rotation of the core beneath the hood causing the air to be drawn in beneath the hood in a stream directed against the web. 

